Improvement in butter-extractor



" THOMAS Gnarls; Ior HOLLY,- MICHIGAN.

Letters Patent N 104,120, dated June 14, 1870.

IMPROVEMENT BUTTER-EXTRACTOR.

The Schedule referred to in these Letters Patent and making part of the lame.

.To' all who-zn 'it 'ma-y concern Beitknown that I, Teoma-is Germs, of-Holly, Oakland county, Michigan, have invented a new andv improved Machine' for Extracting Butter from vesselsin which'it is packed in mass, and leaving it in rolls, and4 giving the weight of each roll, ready for retailin'g vwithout working or weighing;v and Idohereby declare that the following is a full and exact description thereof, reference being had to the'accompanying drawings and the letters and references marked thereon.

My invention consists f a tube made of tin, or its equivalent, open at one end and covered at the other, from two to six'or-more inches in diameterfand long enough to reach to the bot-tom of a butter-tub or crock.

.Tothe inside of this tube is fitted a piston', which runs up and down like the piston to a pump. The upper end of the piston-rod passes outthrough a hole in the center of the cover to the upper end of thetube,

"and also `through a corresponding hole in the handle 'of the machine, which passes in a bow over the top ofthe tube, `and'is fastened to each side thereof.

Tothe upper end of the piston-rod is a handle, put

. on with a screw, to take hold of to work the piston up and down.

.lhe h'ead ot' -the piston runs up and down inside of Athe tube, and is packed, so'as to run air-tight.

Around the piston-rod, above the head of the lpiston, isa piece of India rubber, which sits firmly against the inside of the hole in the cover,throngh which the piston-rod passes, which shuts it air-tight audcauses a partial vacuum, which prevents. the butter from sliding out of Ythetube until it ispushed out by the piston.

On the upper end of the'piston-rod are marks, indicatingthc number of pounds-of butter in the tube,

.nl proportion to the length'of the roll.

Each mark on lthe piston-rod indicates one pound as it appears above the cover, and the parts of a pound areindicated as the marks pass up along the scale.

The machine is worked in the'followizng manner, for vextracting the butter from a vessel in which it is packed in mass:

First', place the piston-head at the open end of the tube; then insert the tube into the butter to the bottom of the vessel, or as deep as desired to draw the butter; then draw thepiston, with a quick motion, to the top of the tfube, so that the India rubber around' the piston-rod comes in contact with the inside of th'e hole in the top of the tube and closes it air-tight; then 'draw the tube from the vessel, and it will contain a roll of butter as longias the depth of butter into which it was inserted; then, by pushing the piston down into the tube, the roll of but-ter is forced out at the lower or open end of the tube, and contains as -many pounds as are indicated by theinarks on the pistonrod above the cover.

The accompanying drawings represent 'the instru-- nient.

Figure 1 represents a` perspective view of Athe instrument, witlrthe head of the pistou in-posi'tion to be inserted.' A is the cylinder; B is the handle'to the' top of thc cylinder; O is the upper en'd of the pistonrod; D is the handle of the piston-rod; E is the scale ot' weights.

Figure 2 represents a sectional view of the instrument. Avis the cylinder; B is the handle of the cyliuder; C' is the head of the piston; G is the piston-- rod; G is the India rubber around the piston-rod; E is the scale of weights.

What Ifclam as my invention, and desire'to se.-

The combination and arrangement of the cylinder.

A, graduate piston-rod C, valve G, and scale E,as-and for the purposes herein specified.v

THOMAS CURTIS. Witnesses:

B. L. R'Assronn, J. G. Smoxsox. 

